Designated as UNS N06985 or DIN 2.4619, Hastelloy G3 (also known as “Alloy G3”) is a nickel-chromium-iron alloy with additions of molybdenum and copper. It has good weldability and resistance to intergranular corrosion in the welded condition. The low carbon content helps prevent sensitization and consequent intergranular corrosion of weld-heat affected zones. Hastelloy G3 is generally used for flue gas scrubbers and for handling reducing acids such as phosphoric and sulfuric.
1. Composition Requirements
The Chemical Composition of Hastelloy G3, % | |
Ni | Balance |
Cr | 21.0-23.5 |
Fe | 18.0-21.0 |
Co | ≤5.0 |
Mo | 6.0-8.0 |
W | ≤1.50 |
Nb | ≤0.5 |
C | ≤0.015 |
Mn | ≤1.0 |
Si | ≤1.0 |
Cu | 1.5-2.5 |
2. Mechanical Properties of Hastelloy G3
Tensile Strength, min. | Yield Strength, min. | Elongation, min. | Hardness, min. | ||
Mpa | ksi | Mpa | ksi | % | HRB |
690 | 100 | 320 | 47 | 50 | 79 |
3. Physical Properties of Hastelloy G3
Density | Melting Range | Specific Heat | Electrical Resistivity | ||
g/cm3 | °C | °F | J/kg. k | Btu/lb.°F | µΩ·m |
8.14 | 1260-1345 | 2300-2450 | 452 | 0.108 | 1180 |
4、Applications
Components used in handling equipment that processes reducing acids such as phosphoric and
sulfuric
Components usedin the productions of sour gas and oil
5. Product Forms
Bozhong Metals supplies Hastelloy G3 material in the form of sheets, strips, coils, wires, bars, forgings, pipes, fittings or flanges.